It is not clear which branch should hold parameter file used with OverrideArmParameters

In documentaation there is currently ambiguity surrounding the branch that should contain the parameter file used in conjunction with the OverrideArmParameters setting. Should this file be created in both collaboration and publish branches, only in publish branch or only in collaboration branch?

Find the documentation describing the OverrideArmParameters setting and inspect how collaboration and publish branches are documented. Clarify whether the parameter file belongs in both branches, only the publish branch, or only the collaboration branch, and update the documentation so the intended branch is explicit.

Written by the indexing model from the issue text.